+ # increase swap to avoid "proc_open(): fork failed - Cannot allocate memory"
+ # this should be removed when no more PHP 5 build will be defined
+ - sudo swapon -s
+ - sudo fallocate -l 4G /swapfile
+ - sudo chmod 600 /swapfile
+ - sudo mkswap /swapfile
+ - sudo swapon /swapfile
+ - sudo swapon -s